Best practice for shared model in razor pages

Being relatively new to ASP.NET Core and Razor Pages, I'm still trying to become familiar with the best approach to handle certain logic.

I have a model that encapsulates every property or model I would liked to have readily available on every razor page.

As I have it now, I have a in-memory model called CurrentEnvironment with a few properties and objects that I'll access from various pages.

CurrentEnvironment Snippet:

public class CurrentEnvironment {
    public string Url {get;set;}
    public string IPAddress {get;set;}
    Public AppUser User {get;set;}\
    //.....
}

Each Razor Page implements BasePageModel which itself implements PageModel. If the page requires Authentication, then there is a SecurePageModel with the [Authorize] filter that implements BasePageModel

BasePageModel:

public CurrentEnvironment CurrentEnvironment { get; set; } = new CurrentEnvironment();

public override Task OnPageHandlerExecutionAsync(PageHandlerExecutingContext context, PageHandlerExecutionDelegate next)
    {
        CurrentEnvironment.IPAddress = context.HttpContext.Connection.RemoteIpAddress?.ToString();
        CurrentEnvironment.Url = context.HttpContext.Request.GetDisplayUrl();


        return base.OnPageHandlerExecutionAsync(context, next);
    }

SecurePageModel snippet:

[Authorize]
    public class SecurePageModelAsync : BasePageModelAsync
    {

//...... 

public override Task OnPageHandlerExecutionAsync(PageHandlerExecutingContext context, PageHandlerExecutionDelegate next)
{
        CurrentEnvironment.User = _userManager.GetUserAsync(HttpContext.User).Result;

        return base.OnPageHandlerExecutionAsync(context, next);
    }
}

My question(s):

1. Is there a better way to handle this and produce the same results?
2. I'm guessing I want to create a service to handle CurrentEnvironment maybe? If so, how would I populate the service? Middleware?